Blocking temperatures of amorphous iron nanoparticles coated by various surfactants

G. Kataby, Yu Koltypin, Abraham Ulman, I. Felner, A. Gedanken

Research output: Contribution to journalArticle

Abstract

Amorphous iron nanoparticles obtained by the sonication of Fe(CO)5 in decalin were coated by various surfactants using the self-assembled monolayer (SAM) technique. They have been shown previously to behave as superparamagnetic materials. These measurements are now extended to include information regarding their blocking temperature (TB). The results show that for one functional group TB is only slightly dependent on the length of the alkyl chain. On the other hand, the nature of the functional group bonded to the iron particles is strongly affecting TB.

Original languageEnglish (US)
Pages (from-to)191-195
Number of pages5
JournalApplied Surface Science
Volume201
Issue number1-4
DOIs
StatePublished - Nov 30 2002

Fingerprint

Surface-Active Agents
Surface active agents
Iron
surfactants
Nanoparticles
iron
nanoparticles
Functional groups
Sonication
Self assembled monolayers
Temperature
temperature
decalin
iron pentacarbonyl

Keywords

  • Amorphous materials
  • Magnetic properties
  • Nanoparticles

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Surfaces, Coatings and Films
  • Condensed Matter Physics

Cite this

Blocking temperatures of amorphous iron nanoparticles coated by various surfactants. / Kataby, G.; Koltypin, Yu; Ulman, Abraham; Felner, I.; Gedanken, A.

In: Applied Surface Science, Vol. 201, No. 1-4, 30.11.2002, p. 191-195.

Research output: Contribution to journalArticle

Kataby, G. ; Koltypin, Yu ; Ulman, Abraham ; Felner, I. ; Gedanken, A. / Blocking temperatures of amorphous iron nanoparticles coated by various surfactants. In: Applied Surface Science. 2002 ; Vol. 201, No. 1-4. pp. 191-195.
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